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Air filtering system

a filtering system and air technology, applied in the direction of filter regeneration, particle charging/ionising station, external electric electrostatic separator, etc., can solve the problem of increasing pressure drop, achieve the effect of accelerating the breaking down of organic substances in the air, cleaning the air, and increasing the energy level of oxygen in the air

Active Publication Date: 2006-11-07
SCANDFILTER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a system for filtration of air that reduces the penetration of particles while maintaining pressure drop. The system includes a filter made of fibers of polypropylene mixed with acrylic, which results in a penetration of particles as low as 1 to 2%. The use of modified acrylic further reduces the penetration of particles. The system can be used in an air cleaner or an air supply system, and it also includes a means for bipolar ionization of the air which helps to break down small particles, odors, and harmful substances in the air."

Problems solved by technology

This is achieved in prior-art technique by using filters with finer fibers, i.e. tighter filters, which however also bring about the effect that the pressure drop increases.

Method used

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Embodiment Construction

[0015]FIG. 1 shows an air cleaner 1 comprising a fan 2, an ionizing means 3, a filter 4 and an earthed casing 5. The air is delivered to the air cleaner 1 by means of the fan 2, after which the air flows past the ionizing means 3, whereby the air is ionized. After the air has been ionized, it thus flows through the filter 4. The filter 4 is preferably made of polypropylene mixed with modified acrylic, i.e. in this case polyvinyl chloride is grafted into the acrylic. The polypropylene fibers and the acrylic are processed in a carding process to produce filter material comprising portions which are negatively charged and other portions which are positively charged, an electric field arising in the filter material that helps to catch the particles in the ionized air. The effect of the ionization differs, depending on the properties of the particles, such as material, size and temperature. In some cases, the particles form lumps, which makes it easier for them to be absorbed by the filt...

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Abstract

An air filtration system including a filter (4) for separation of particles and an ionizer (3) for ionization of the air. In use of the system, ionization of the air occurs before the air passes the filter (4). The filter (4) is made up of fibers of polypropylene mixed with acrylic.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a system in filtration of air, comprising a filter for separation of particles and a means for ionization of the air, ionization of the air, in use of the system, occurring before the air passes said filter.BACKGROUND ART[0002]Systems as described above are today of frequent occurrence. Ionization means that the degree of separation is increased, or alternatively that penetration decreases. In filters, it is desirable to have as little penetration of particles as possible and at the same time have as small a pressure drop as possible. A filter system with a relatively coarse filter which usually has a penetration of about 35% can be improved by ionization of the air before the air passes through the filter. The penetration can for the same filter as described above be reduced to about 10% by ionization of the air before the air passes through the filter. Thus, such a system has the advantage that the pressure drop is low a...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B03C3/155B03C3/38
CPCB03C3/155B03C3/38
Inventor CARLSSON
Owner SCANDFILTER
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